Machine for tightening rolls of paper.



No. 806,847. PATENTED DEC. l2, 1905.

A. H. SCOTT.

MACHINE FOR TIGHTENING ROLLS OP PAPER.

n APPLIOATION FILED APR. 17, 1905.

I z SHEETS-SHEET 1 PATENTED DEC. 12, 1905.

No.l 806,847.

A. H. SCOTT.

MACHINE FOB. TIGHTENING ROLLS OP PAPER.

APPLICATION FILED .A1-3.17, 1905.

2 SHEETS-SHEET 2 'UNITED sfrkrns PATENT OFFICE.

ARTHUR H. SCOTT, OF PHILADELPHIA, PENNSYLVANIA.

MACHINE Fon TIGHTENING ROLLS oF PAPER.

Specification of Letters Patent.

Patented Dec. 12, 1905.

Application filed April 17, 1905. Serial No. 255,924.

tightening rolls of paper; and it consists of certain improvements which are fully set forth in the following specification and shown in the accompanying drawings, which form a part thereof.

In making rolls of toilet-paper the winding of the paper in the first instance is such that the rolls produced are not of uniform diameter.

The object of my invention is to provide a machine adapted to rewind or tighten the rolls to reduce them all to a uniform diameter and preferably to perform said result in an automatic manner.

My invention comprises a rotating carrier provided with one or more intermittently-rotated shafts adapted to be thrust through the hole in the roll and by friction with the inner end of the paper cause it to be rotated and tightened upon the rotating shaft.

It further comprises means which when the roll has been reduced to the requisitediameter causes it to be automatically discharged.

My invention also includes many details of construction, which, together with the abovespecified features, will be better understood by reference to the drawings, in which- Figure l is an elevation of amachine embodying my invention. Fig. 2 is a sectional elevation on line 2 2 looking toward the carrier. Fig. 3 is a sectional elevation on line 3 3 looking away from the carrier. Fig. 4 is a sectional elevation through one of the shafts, and Figs. 5 and 6 are sectional views of the roll of paper before and after being tightened.

, A is a'large circular carrier, secured upon shaft A', driven at a comparatively slow speed by abelt andloose pulley R, pressed by aspring S against a friction-"disk A2 on the shaft or other means which will permit the stopping of the carrier whenever it meets with resistance.

B represents shafts whichtelescope or slide into rotating sleeves B, rotated by small electric motors T, fastened on the opposite face of the carrier A. These lmotors are operated with current supplied from any source of energy by wires t, so that they are run independently fromv the carrier and at a comparatively high rate of speed. A suitable commutator or switch W closes and opens the circuit with the motors successively to cause them to rotate at certain intervals in the rotation of the carrier. These shafts B have splines L, which slide in grooves L in the sleeves, so that they rotate with the sleeves at all times. The shafts B are normally withdrawn beyond the edge or face of the carrier A, but are so arranged that when the trigger b (which projects a short distance beyond the face of the carrier) meets with an obstruction, as a roll of paper, it releases the catch C, allowing a strong spring D to force the shafts B out a certain distance, preferably slightly more than the width of the roll to be tightened.

The rolls of paper P are fed down an inclined chute Einto an inclosed curved passage P', open at the top and bottom, but so arranged that its top E and bottom E2 are at any point exactly equal in distances from the path of the shafts B, but far enough apart at the entrance c to admit of the largest size roll and close enough together at the exit e to prevent the exit of any roll not small enough. The exit ends e are preferably adjustable in any suitable manner. As shown, they are adjustably clamped upon the stationary vertical frame H at F, so that the machine can be set to tighten a roll of paper to any desired diameter.

G and Gr are curved strips of metal secured to the frame H and so arranged that they will strip from the shafts B the roll of paper I after it is tightened, said strips being close to the face of the carrier at the forward end and gradually increasing the distance until at the rear end they are at a distance somewhat greater than the width of the roll, thereby withdrawing the rolls from the shafts and eX- pelling them from the machine.

J is a permanent cam-piece placed at its.

forward end a distance a little more than the projecting shafts B and gradually nearing the carrier until at the rear end J it has forced the shaft B into its original position, so as to be held by the catch C until released by another roll.

The trigger Z2 should be set in the rear of the shaft B a distance equal to a little more IOO VQ l

than one-half the diameter of the roll of paper to be tightened, so that the shaft B will as nearly as possible strike the hole in the center of the roll and engage the roll nicely.

The shafts B may be of various shapes, but should preferably be provided with tapering blunt noses, so as not to damage the rolls on entering the core. These shafts B may be of any desired cross-section.

It is desirable that the shafts B shall not rotate until they have fairly engaged the roll of paper, in which case it is only necessary to provide circuit closing and opening switches to control the current passing to the motors. To accomplish this result, I provide two curved insulated contact-strips K K', connecting with the positive and negative wires of the circuit. Each motor is provided with contact-brushes L 7c' to work in contact with the strips K K' to supply current to the motor during a portion of its movement with the carrier A, said portion being during the period from the time the shaft has entered the roll to the time the tightened roll passes the ends e of the top and bottom plates of the roll-passageP. In this way the shaft is turning only when it is doing work and does not tear the roll, because it does not reach its maximum speed for a short time after completion of the circuit.

It is obvious from the description that when a roll P is fed down the chute E it will by gravity wedge in the passage-way P', its core being half-way between the top E and bottom E2 and in the path of the shafts B. The carrier A will revolve until the trigger comes in contact with a roll P, releasing the shaft B practically over the hole of the roll. The shaft after plunging through the roll wedges the roll tighter into the channel or passageway, arresting the movement of the carrier A. In the meantime the electric circuit has been closed, starting the motor and causing the shaft B to wind the core of the roll tighter, the carrier A keeping the roll snug against the top and bottom of the passage-way P, and thus holding its outer part against rotation. This action is continued until the roll is small enough to pass through the space e' at the ends of the parts E' `2 The strippers G and Gr then engage the roll and force it olf the shaft B. Inthemeantimetheshafthasdiscontinued rotating, as the circuit is interrupted by the contacts It k leaving the strips K K. The shaft B is then forced into its original position by the piece J, allowing the snap C to engage the shaft and hold it in its normal position until another roll is encountered.

The capacity of the machine is of course limited by the number of motors and rotating shafts B, and this by the size of the carrier. It is evident that it would also be possible to make the wheel large enough to accommodate two or more sets of chutes, channels, strippers, &c. around the circumference.

Instead of electrical motors any suitable niechanical arrangement for revolving the shafts may be employed.

While the construction shown is excellently adapted to the purposes of my invention, I do not confine myself to the details, as they may be modified in various ways without departing from the spirit of the invention.

Having now described my invention, whatI claim as new, and desire to secure by Letters Patent, is-

l. In amachine for tightening rolls of paper, the combination of guides forming a passageway broader at the entrance than at the discharge end through which the roll of paper is fed, with a rotating carrier, a spindle adjustably carried thereby, means to rotate said spindle, and means to cause said spindle to be projected into the space between the guides whereby it enters the h'ole in the roll of paper.

2. In a machine for tightening rolls of paper, the combination of guides forming a passageway broader at theventrance than at the discharge end through which the roll of paper is fed, with a rotating carrier, a spindle adjustably carried thereby, means to rotate said spindle, means to discharge the tightened roll of paper from the spindle, and means to cause said spindle to be projected into the space between the guides whereby it enters the hole in the roll of paper.

3. In a machine for tightening rolls of paper, the combination of guides forming a passageway broader at the entrance than at the discharge end through which the roll of paper is fed, with a rotating carrier, a spindle adjustably carried thereby, means to rotate said spindle, means to discharge the tightened roll of paper from the spindle, means to control the rotation of the'spindle whereby it is rotated only while in contact with the paper-roll, and means to cause said spindle to be projected into the space between the guides whereby it enters the hole in the roll of paper.

4. In a machine for tightening rolls of paper, the combination of guides forming a passageway broader at the entrance than at the discharge end through which the roll of paper is fed, with a rotating carrier, a spindle adjustably carried thereby, means to rotate said spindle, means to cause said spindle to be projected into the space between the guides Whereby it enters the hole in the roll of paper and means operated by contact with the paperroll to control the time of the projection of the spindle.

5. In a machine for tightening rolls of paper, the combination of guides forming a passageway broader at the entrance than at the discharge end through which the roll of paper is fed, with a rotating carrier, a spindle adjustably carried thereby, means to rotate said spindle, means to cause said spindle to be projected into the space between the guides where- `by it enters' the hole in the roll of paper and means operated by contact with the paperroll to control the time of the projection'of the spindle, and means to control the rotation of the spindle whereby it is rotated only while in contact with the paper-roll.

6. In a machine for tightening rolls of paper, the combination of guides forming a passageway broader at the entrance than at the discharge end through which the roll of paper is fed, with a rotating carrier, a spindle adjustably carried thereby, means to rotate said spindle, means to cause said spindle to be projected into the space between the guides Whereby it enters the hole in the roll of paper, and

means to return the spindle to its original position after passing the guides.

7. In a machine for tighteningrolls'of paper, the combination of guides forming a passageway broader at the entrance than at the discharge end through which lthe roll of paper is fed, with a rotating carrier, a spindle adjustably carried thereby, means to rotate said spindle, means to cause said spindle to be projected into the space between the guides whereby it enters the hole in the-roll of paper, means to return the spindle to its original position after passing the guides, and means to discharge the tightened roll of paper from the spindle.

8. In a machine for tightening rolls of paper,

I the combination of a guide for a roll of paper having a restricted discharge-opening at its rear end, with a rotating carrier, a spindle supported by the carrier, and means for imparting to the spindle a rotary and reciprocating movement.

9. In a machine for tightening rolls of paper, the combination of a guide for a roll of paper having a restricted discharge-opening at its rear end, with a rotating carrier, a spindle supported by the carrier, and means for imparting to the spindle a rotary motion during its travel through the guide and a reciprocating movement upon entering and after leaving the guide.

10. In a machine for tightening rolls of paper, the combination of a guide for a roll of paper havinga restricted discharge-opening at its rear end, with a rotating carrier, a spindle supported by the carrier, a spring to project the shaft into the space inclosed by the guide, means to rotate the spindle, and a cam to return the spindle to its original position on the carrier after'passing beyond the guide.

11. In a machine for tightening rolls of paper, the combination of a guide for a roll of paper having a restricted discharge-opening at its rear end, with a rotating carrier, a spindle supported by the carriera spring to project the shaft into the space inclosed by the guide, means to rotate the spindle, consisting of an electric motor and current-controlling to return the spindle to its original position on the carrier after passing beyond the guide. l' 12. In a machine for tightening rolls of paper, the combination of guides forming a passage-way broader at the entrance than at the discharge end through which the roll of paper is fed, with a rotating carrier, a spindle adjustably carried thereby, means consisting of an electric motor movable with the carrier for rotating the spindle, a switch for putting the motor intoand out of operation at stated intervals, and means for reciprocating the spindle to enter the roll of paper.

13. Ina machine for tightening rolls of paper, the combination of guides forming a passage-way broader at the entrance than at the discharge end through which the roll of paper is fed, lwith a rotating carrier, a spindle adjustably carried thereby, means consisting of an electric motor movable with the carrier for rotating the spindle, a switch for putting the motor into and out of operation at stated intervals, and means for reciprocating the spindle to enter the roll of paper consisting of aspri'ng to project the spindle into the roll and a cam to return it to its original position on the carrier.

14. In a machine for tightening rolls of paper, the combination of guides forming a passage-way broader at the entrance than at the discharge end through which the roll of paper is fed, with a rotating carrier, a spindle adjustably carried thereby, means consisting of an electric motor movable with the carrier for rotating the spindle, a switch for putting the motor into and out of operation at stated intervals, means for reciprocating the spindle the carrier.

16. In a machine for tighteningrolls of paper, the combination of a guide passage-way :for a roll of paper comprising top and bottom plates adjustable to and from each other at the discharge end of the passage-way, with a rotating carrier, a spindle supported by the carrier, means to impart a rotary motion to the spindle, means for reciprocating the spindle at stated intervals in its travel with the carrier, and a latch controlled by the paperroll for regulating the time of reciprocation ofthe spindle.

17. In a machine for tightening rolls of pameans for regulating its operation, and a cam l per, the`combination of a guide for a roll of IOO IIO

IIS

In testimony of which invention I hereunto set my hand.

paper having a restricted discharge-opening at its rear end, With a rotating carrier, a spindle supported by the Carrier, means for imparting to the spindle a rotary and reciproi ARTHUR H. SCOTT. 5 eating movement, and a latch controlled by Vitnesses:

GLENN T. SCOTT, GEO. E. GRIFFIN.

the paper-roll for regulating the time of reeiprocation of the spindle. 

